Gas-engine.



G. E. FORRY. GAS ENGINE. PLIOATION FILED JUNE a, 1911.

3 SHEETS-SHEET l.

Patented Nov. 5, 1912.

G. E. FORRY.

GAS ENGINE. APPLIUATION FILED JUNE 3, 1911.

1,043,583. Patented Nov. 5, 1912.

3 SHEETS-SHEET 2.

G. E.' F'oRRY. GAS ENGINE. APPLICATION FILED JUNE 3, 1911. 1,043,583. iPatented N0v.5, 1912.

3 SHEETS-SHEET 3.

/NVENTo/e,

@nonoui E. Forum', or BRNSWIGK, itARYLAND. y

GAS-ENGINE.

Specification of Letters Patent.

Patented Nov. 5, 1912.

Application tiled .Tune 3, 1911... Serial No. 631,122.

To all who/m, it may concern.

Be it known that I, GEORGE E. FoRRr, a citizen of the United States,residing at Erunswiek, in the county of Frederick and State of Maryland,have invented new and 'useful Improvements in Gras-Engines, of which thefollowing is a specification.

rlfhis invention relates to improvements in gas engines, and moreparticularly to a construction whereby one or more of the cylinders in amultiple cylinder gas engine may be converted into an`air pump. A

This invention is particularly contemplated for installation upon gasengines in automobiles. and the compression stroke of the piston in oneor more of the cylinders can be utilized' in iniiating the tires. Theinvention'inay as well be installed uponstationary engines when it isdesired to compress air in a reservoir or for any other purpose.

The advantages of utilizing one or more of the cylinders upon anautomobile for pumping up the tires by operating the enf gine while theautomobile is stationary is obvious. The other applications to whichthis invention may be put in connection with other gas engines is alsoobvious.

lVhile the preferred forms of this. invention are illustrated in` thel.accompanying sheets of drawing, yet it is tobe understood that minordetail changes may be made without departing from the'scope thereof.y

All of the figures upon the drawing illustrate this invention as appliedto automobile engines, yet it is also to be understood that thisinvention may be applied as well to other forms of gas engines havingmultiple a double cylinder engine.

cylinders and it is so contemplated as a part of this invention.

Figure 1 is a view in side elevation of any automobile with part of thehood broken away to disclose this invention as applied to Fig. 2 is a.view in top plan of a four cylinder engine to which this invention hasbeen applied in which a separate mixture pipe leads from the carbureterto each cylinder. Fig. 3 is a similar View of a four cylinder engine inwhich the cylinders are cast in pairs and a single mixtur pipe leadsvtrom the Catrbureter to each pair of cylinders. Fig. 4l is a' similarview in which the mixture is led from the carbureter by a manifold'connection to each cylinder. Fig. bis a view in side elevation of amultiple cylinder engine in which the spark plug is inserted inthe sidewith parts broken away to illustrate the appli-cation of this inventionto this form of engine. Fig. 6 is an enlarged detail view in verticallongitudinal section of an air inlet valve, taken upon lines A-A of Fig.7,1001(- ing in the direct-ion of the arrows. Fig. 7 is an enlargeddetail View in Ahorizontal lon gitudinal section of an air inlet valve,taken on the line llit-7B of Fig. 6. Fig. 8 is an enlarged detail viewin vertical section through an air discharge valve. Figs. 9, 10 and 1]are enlarged sectional views taken at righ-t angles to Fig. 8illustrating the operation in detail of a part of an air dischargevalve. Fig. 12 is a top plan view.` of a multiple Vcylinder engine inwhich the manifold from the carbureter makes a direct connection to eachcylinder. Fig. 13 is avertical sectional view showing the application ofthe air inlet valve to the form of engine shown in Fig.

'13. Fig. 14 is a. detail view'partly in section of a `strainer.

This invention contemplates in separating one of the cylinders of amultiple gas engine from the carbureter by placing a valve between thecylinder and the source, of mixture by which the mixture may either beadmitted to that cylinder or the mi: ture may be cut oli andr airadmitted to that .ylinder in its place. For the purpose of l iisapplication this valve will be termed the .wir inlet valve. Then if theengine is not already supplied with a pet cock by which the cylinder maybe scavenged at times or may be primed when necessary, it will besupplied with a valve termed for the purposeof this application, an air`dischargel valve, otherwise this air discharge valve will besubstituted for the pet cock. It will be noted that by this constructionand arrangement. this invention may be installed upon any multiplecylinder engine without any interference with the regular operation ofthe cylinder or regular intake and eX- haust Avalves or the ignitionsystem. The general operation of the air. inlet and air discharge valveswill be explained and then their application to the diierent forms of:multiple cylinder engines and their operation in converting one or morecylinders into an air pump.

The airinlet valve 1 comprises a .casing 2 adapted to be inserted` inthe mixture supply pipe at any convenient point Ibetween tween fine wiremesh or screening by a circular cap 6 engaging theouter mesh orscreening and the flange orrim 4. The central portion of the valve 1 ispreferably cylindrical in horizontal section and within this cylindricalportion is rotatably mount- `ed a hollow valve member 7. The side wallsof the valve member 7 are provided with lthree ports 8, 97 and 10, andthe top 11 is provided with a central valve stem 12 and lhand wheel 13.Two of the ports 8 and 9 are arranged diametrically opposite and thethird port ,10 onone side intermediate between them so that when in theposition shown in Figs. G and 7 the mixture will be free to flow freelyfrom the carbureter to the cylinder and the air port 3 will be'closed bythe solid side wall of the valve member 7. By rotating the hand wheel 13a quarter of a turn in one direction one of the ports will register withthe air port 3 and another port with the supply pipe while the oppositeconnection to the supply pipe will be closed by the solid wall of valvemember 7. By proper arrangement of the ports 8, 9, and 10 the supplyfrom the carbureter may be cut olf and the cylinder opened to theatmosphere through the air port 3. A stop may be placed to preventrotation of the valve member 7 in the opposite direction so as toprevent the carburetor being openedto the atmosphere.

The cylinders of most gas engines are supplied with a pet cock forscavenging and priming the cylinders and in such case the regular pctcock is exchanged for the one shown in Figs. 8, 9, 10 and 11 inconnection with the air discl'iarge valve shown in Fig. 8, otherwise theair discharge valve and pet cock are attachcdat a convenient point tothe upper part of the cylinder. The -pet cock 11- is provided with athree way valve member 15 having one port leading directly therethroughand another port leading therefrom at right angles thereto, and apriming cup 16 is provided upon one side leading into the Valvelintermediate the straight through passage. From the top of the pet cockvalve leads an air pipe 17. At the point of connection between the petcock 11- and the air pipe 17 a check valve 1'8 of preferably theballtype is provided. Then the pet cock 14 is in the position shown in Fig. 9 the air pipe 17 will be in direct com` munication with theinterior of the cylinder. When -the pet cock 14 is in the positionvinder inclosed within the water jacket.

ipesee shown in Fig. 10 the communication te the cylinder will beentirely closed and when in the position shown in Fig. 11 the interiorof the cylinder will be in conmiunication with the atmosphere throughthe priming cup lo.

Fig. 1 shows an ,automobile provided with a two cylinder engine havinga. mixture pipe leading from each cylinder to the carlnireier. ln thistype of engine to accomplish the object of this invention an air inletvalve 1 is placed in the mixture pipe between one cylinder andcarburetor and that cylinder is provided with the air discharge valve.The air pipe preferably follows the frame of the automobile andterminates in the tool box 19 where a rubber tube or hose E20 may beattached to lead to the valves upon the dit ferent tires. lVhen it isdesired to inflate a tire the hose and tube are connected to that tire,the air inlet valve operated to admit air into the cylinder and the airdischarge valve operated to connect the air tube Q0 and air pipe 17 tothe interior of the cylinder and the engine started and operated by theother cylinder. As the regular operaiing valves of the cylinders havenot been altered one cylinder will operate as usiril while the other asthe mixture intake valve rises will draw in air through the air intakevalve and the compression stroke of the piston will discharge thecompressed air through the air discharge valve. the air pipe and hose orair tube intothe tire.

Fig. 2 illustrates a four cylinder engine having a separate mixturesupply pipe leading from the carbureter to each cylinder. ln such anarrangement it is .preferable to insert the air inlet valve 1 in thcmixture pipes leading to thc alternate cylinders and providing thesealternate ,cylinders with thc air discharge 'valves and then connect lhe air pipes 17 from these valves as at 2.1.

Fig. 3 shows a four cylinder engine. hav-` ing the cylinders cast inpairs and a single mixture supply pipe leading to each pair. In thisform the air inlet valve is placedin one mixture supply pipe between thecarbureter and one pair and that pair provided with air discharge valvesand air pipes 17 connected as at-Ql.

Fig. 4; shows a four cylinder engine having four separate cylinders buteach cylinder connected with the carburetor tln'ough a manifold mixturesupply 22. Each cylinder is connected by an individual pipe 2% to themanifold and in such a case the air inlet valves are placed in thealternate pipes 23 and these cylinders connected in. the same manner asin Fig. 2.

Fig. 5 shows the applica tion of this inven` tion to an engine havingthe spark plug in sertcd in the side of the cylinder or mixture intakevalve and having the top of the cylln this form a T-joint 24 having thetail member of the same size as the spark plug is placed in the cylinderin lieu of the spark plug and the spark plug 25 inserted in one sideandthe air discharge valve in the other end as shown. The air inletvalve is placed between the cylinder and carbureter in the manner shownupon the other figures.

In some gas engines the manifold makes a direct connection to eachcylinder and in this case it is necessary to place a pipe 26 in themixture intake port of 4'one cylinder which pipe leads through themanifold to the atmosphere as at 27. The air inlet valve l is placed inthepipe 2G with the valve stem 12 extending therethrough and arranged sothat the side opening will communicate with the interior of the manifoldand then straight through ports will connect the cyliiider to the airthrough the opening 27 in the pipe 26.

In some cases the ordinary pet cock is not provided and only the sparkplug opening is provided in the cylinder head. In such a constructionthis invention is applied in the same manner as shown on Fig. 5. Iffound more convenient an L-joint may be substituted for the T-joint inwhich one armis secured in the spark plug orifice With the air dischargevalve in the other arm and the spark plug inserted at the juncture ofthe two arms.

If desired a hair strainer 28, Fig. 14, may- What I claim is 1. In adevice of the character described, an air inlet valve in the mixturesupply pipe between the source of mixture and a cylin-l "der, and thatcylinder provided with an air prising a casing communicating with themixture supply pipe at each end and having an air port provided with astrainer and a discharge valve, said air inlet valve comrotatable valvemember adapted to lead the p mixture to the cylinder in one position andin another to cut off the mixture and place the cylinder incommunication with the air.

2. Ina device of the character described, an air inlet valve in themixture supply pipe between the source and a cylinder, and that cylinderprovided With a pet cock-having a three way'valve leading to theatmosphere in one position, an 'air pipe connection, a

GEORGE E. FoniiY. Witnesses A LANGDON MOORE, CAROLINE MORGAN.

